Fig. 2
From: Molecular epidemiology of Aleutian mink disease virus from fecal swab of mink in northeast China
Phylogenetic tree of 37 AMDV isolates based on alignment of the partial fragments of VP2 gene. The tree was constructed using neighbor-joining method (a) and maximum likelihood method (b). Bootstrap values higher than 40% (a) or 39% (b) are shown (1000 replications). The reference sequences were obtained from the GenBank database, and are marked by the country origins (China, USA, Russia, Germany, Finland and Ireland). The strains were separated into three groups designated by the letters A, B and C. Scale bar indicates the average number of amino acids substitutions per site